Cartesian Therapeutics, Inc. — Director's Dealing 2017

Jun 28, 2017

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: SELECTA BIOSCIENCES INC (SELB)
CIK: 0001453687
Period of Report: 2017-06-27

Reporting Person: Keller Peter (Chief Business Officer)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2017-06-27	Common Stock	M	4595	$0.63	Acquired	5000	Direct
2017-06-27	Common Stock	S	4595	$19.2995	Disposed	405	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2017-06-27	Employee Stock Option (right to buy)	$0.63	M	4595	Disposed	2021-02-16	Common Stock (4595)	Direct

Footnotes

F1: The price reported in Column 4 is a weighted average price. The shares were sold in multiple transactions at prices ranging from $19.20 to $19.49, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

F2: All shares underlying this option are fully vested.